Patents by Inventor Daniel Frederick Fehler

Daniel Frederick Fehler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of reducing sand production from a wellbore
    Patent number: 7451818
    Abstract: A method is provided for the reduction of inflow of rock particles from an earth formation into a wellbore for the production of hydrocarbon fluid. The method comprises creating a zone of reduced compressive stiffness around the wellbore by removing rock material from the wall of the wellbore.
    Type: Grant
    Filed: November 10, 2004
    Date of Patent: November 18, 2008
    Assignee: Shell Oil Company
    Inventors: Michael Anthony Addis, Chengho Abel Lee, Victor Arkady Dunayevsky, Daniel Frederick Fehler, Mohamad Fereydoon Khodaverdian